Precisely. Zeiss (almost always) makes very good lenses, which is why Apple selected them. But I've had opticians do a poor job of getting me the prescription

Precisely. Zeiss (almost always) makes very good lenses, which is why Apple selected them. But I've had opticians do a poor job of getting me the prescription I need, and so the Zeiss lenses were way off. I bet Apple will have this dialed in from the get-go.